+1(514) 937-9445 or Toll-free (Canada & US) +1 (888) 947-9445
some say its an automated response after 14 days but according to official site ..it’s mentioned that “we do not send any acknowledgment receipt until we open your file”

Yes u r right most of the people told me that it is auto-generated email through embassy which implies that your file was opened and it is now under process.